What marma vidya if any may you gain from books?

marmavidya is related to Kalari, a traditional martial arts of Kalaripayatu

Ayurveda & Marma Therapy is a great book for Yoga Teachers and Massage Therapists. You can quickly restore balance, healing, ease, with just a few key points.
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Ayurveda and Marma Therapy by David Frawley, available at Book Depository with free delivery worldwide.

Gunas - Sattva, Rajas, Tamas : The 5 elements manifest from universal consciousness into individual consciousness to 3 mental gunas : SATTVA, RAJAS ,TAMAS